[rfeenstra]

According to the schematic, that would be correct, and yes, you would only need 2 wires coming from the can. This can was probably used in other applications that required the third connection. For this application, the 2 wire approach is less cluttered on the "A - B" terminal strip. When I get to my 38-116, I may do the same thing even though I did it as original in my 37-116. Why it was done with three wires probably can be answered by Ron or one of the other guru's!